/**
 * @author Clark
 * @email haixuanwoTxh@gmail.com
 * @date 2021-10-30
 */
#include <stdio.h>

int main(int argc, char *argv[])
{
    int c;

    c = getchar();
    while (c != EOF)
    {
        putchar(c);
        c = getchar();
    }
    
    printf("run over\n");
    return 0;
}

